Originally Posted By jvike
I'm making my own wiring, does anyone know if the resistance wire is something special or is it just a standard 20 guage copper wire?


Depending on the type of defogger motor assembly you have, there will either be a single wire to the motor or a circuit board resistor mounted on the air plenum. Here is a picture of one defogger motor assembly with the circuit board resistor. All of the wiring mentioned below was stranded, not solid copper.

The single cable versions used an overall cable length of 12’ 6” with a male T connector to plug into the dash harness adapter that Vlad (Hey Vlad!) is showing plugged in at the kick panel. A black 18 gauge wire on the – T and white 20 gauge wire on the | T. That taped two wire harness ran for 8’ 9” and then were crimped together with a black 16 gauge wire that was 3’ 7” running to a single female terminal to the single wire male wire from the defogger motor.

The dual cable version used the same length, but was a Siamese cable with both the black and black w/ white stripe being 18 gauge with T connectors on both ends. A male T at the kick panel and female T at the defogger motor assembly. The solid black wire was on the – T and the black w/ white stripe on the | T male connector at the kick panel. On the motor side the wiring was inverted and the Black w/ White Stripe was connected on the – T and the Black was connected on the | T female connector.









Jim